The Tech Package gives you MDynamic Mode, which is a semi-off DSC, which is hardly detuning. It also gives you a Sport steering setting and a Sport Plus throttle setting which are more agressive than normal modes.

I thought sport plus is the default option you have when you only have a power button and no tech package, the difference being no middle options? What I do know is the car is 414hp whether you have tech package or not so it doesn't make it any faster.